Too big of a size difference? Datnoids in the same tank?

[MyDrumNoGood]

i started off with 1 datnoid and hes about 6-7 inches now. i got my hands on 6 baby datnoids around 2-3? inches. Should i just put them all together? or its gonna turn out bad?

 

[BBXB2020]

I’d wait till there 4inches